Isomers
Lysergic acid is a chiral compound with two stereocenters. The isomer with inverted configuration at carbon atom 8 close to the carboxy group is called isolysergic acid. Inversion at carbon 5 close to the nitrogen atom leads to -lysergic acid and -isolysergic acid, respectively. Lysergic acid is listed as a Table I precursor under the United Nations Convention Against Illicit Traffic in Narcotic Drugs and Psychotropic Substances.
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